以下程序的输出结果是（ ）。　　#include＜iostream.h＞　　vo

网络操作系统的基本任务其中的一项就是：提供网络系统的__________服务。

下列关于人民银行个人征信查询系统用户权限的描述，正确的是：（）。

A、省级系统管理员负责全省农村合作金融机构所有用户的创建

B、各用户如遗忘自己的登录密码，可由自己完成密码重置

C、管理员用户和普通用户都可以查询客户个人信用报告

D、系统管理员对下级用户只能进行停用/启用操作，不能删除用户

家禽饲养标准中能量用（）体系；猪饲养标准能量体系是（）和（）兼用。

A typical application of this (71) is ADSL. It is emerging as the technology for home-and small-office Internet connectivity. It provides either 1.5 Mb/s～8 Mb/s from the network to the user and 64 kb/s～512 kb/s in the reverse direction depending on the distance, 12000 or 18000 feet. The different speed for each direction gives it the (72) label. ADSL is designed to take advantage of the fact that video-on demand, telecommuting, and Internet access traffic are inherently asymmetrical. The user (73) a brief message up to the network and receives a ton of data coming back, either a movie or a piece of data download. Under such a scenario, low-speed traffic to the network is just fine. ADSL .delivers high (74) where you need it and only uses a single copper pair. Through multiplexing, it also reserves (75) of the bandwidth for POTS.

A．sends

B．personates

C．receives

D．writes

行纪人在行纪中未经委托人的同意以低于委托人指定的价格卖出的，该行为因超越委托人的授权而认定无效，其后果由行纪人承担。( )